# Circa³ vs CommaSurf

The clearest difference is update cadence: Circa³ at monthly against CommaSurf's every 20 months. Circa³ also leads on device support (4 vs 2) and iOS requirement (11.0 vs 17.6). CommaSurf's advantage is price ($1.99 vs $3.99). On ads and in-app purchases there is nothing between them.

Circa³ costs $3.99 and CommaSurf $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Circa³ ships an update monthly, CommaSurf every 20 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Circa³ | CommaSurf |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | **[4.5 (384 ratings)](https://appshunter.io/ios/app/circa-time-zone-converter/id968698352/reviews)** | — |
| Number of ratings | **384** | — |
| Positive reviews | 63.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 20 months |
| Monetization | Free | — |
| Size | 39 MB | 1 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Kostiantyn Zuiev](https://appshunter.io/developer/1053341480) | [Viktor Sengel](https://appshunter.io/developer/498792670) |

## What reviewers say

### Circa³

[App page](https://appshunter.io/ios/app/circa-time-zone-converter/id968698352)

Easily manage time across different locations and time zones. Find optimal meeting times and generate invitations that suit everyone's schedule. This tool helps synchronize teams working in various parts of the world.

**Highlights:** Compare time across multiple locations, View working hour overlaps, Integrate calendars, Organize personally, Create one-touch meeting invitations

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### CommaSurf

[App page](https://appshunter.io/ios/app/commasurf-watch-browser/id1664602456)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Circa³ free?

Circa³ costs $3.99, with no in-app purchases.

### Is CommaSurf free?

CommaSurf costs $1.99, with no in-app purchases.

### Do Circa³ or CommaSurf have ads?

Neither Circa³ nor CommaSurf shows ads.

### Which is updated more often, Circa³ or CommaSurf?

Circa³ ships an update monthly, and CommaSurf every 20 months. Most recently, Circa³ was updated on October 26, 2026 and CommaSurf on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*